/Engine/Source/Runtime/Engine/Public/AssetCompilingManager.h
Event called before and after FinishAllCompilation or ProcessAsyncTasks run operations on a specific package, used for subscribers to associate low-level actions with that Package (e.g.TObjectPtrreads). void OnPackageScopeEvent(UPackage* Package, bool bEntering) Called with bEntering=true followed by actions for Package followed by call with bEntering=false.
typedef TMulticastDelegate_TwoParams< void, [UPackage](API\Runtime\CoreUObject\UObject\UPackage) *, bool > FPackageScopeEvent